I have never been, so I can't promise anything, but it definitely has the potential to be interesting. I plan to attend a number of events, but I must admit that if I was basing my attendance solely on how annoying their website is I would probably stay away.
First of all, I hate websites that play noise automatically.
Second, I hate it even more when there is not an immediately obvious place to turn the music/sound off.
Third, I hate it most of all when there is no place at all to turn the sound off.
Fourth, I think that it looks pretty bad when you have a background design which remains static while your page scrolls over it.
Anyway, that's it for complaints, now I can enjoy the festival.